US11828505B2 - Gas injection type heat management system for vehicle - Google Patents
Gas injection type heat management system for vehicle Download PDFInfo
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- US11828505B2 US11828505B2 US17/946,291 US202217946291A US11828505B2 US 11828505 B2 US11828505 B2 US 11828505B2 US 202217946291 A US202217946291 A US 202217946291A US 11828505 B2 US11828505 B2 US 11828505B2
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- 238000002347 injection Methods 0.000 title claims description 86
- 239000007924 injection Substances 0.000 title claims description 86
- 238000011144 upstream manufacturing Methods 0.000 claims abstract description 41
- 239000003507 refrigerant Substances 0.000 claims description 179
- 238000001816 cooling Methods 0.000 claims description 55
- 239000007788 liquid Substances 0.000 claims description 40
- 238000010438 heat treatment Methods 0.000 claims description 31
- 230000006835 compression Effects 0.000 claims description 19
- 238000007906 compression Methods 0.000 claims description 19
- 239000007789 gas Substances 0.000 description 49
- 238000010586 diagram Methods 0.000 description 32
- 238000005057 refrigeration Methods 0.000 description 10
- 230000014509 gene expression Effects 0.000 description 4
- 238000004781 supercooling Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000004378 air conditioning Methods 0.000 description 2
- 238000002485 combustion reaction Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000003213 activating effect Effects 0.000 description 1
- 239000002826 coolant Substances 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000013021 overheating Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 230000008016 vaporization Effects 0.000 description 1
- 239000002918 waste heat Substances 0.000 description 1
Images
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
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- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B41/00—Fluid-circulation arrangements
- F25B41/40—Fluid line arrangements
- F25B41/42—Arrangements for diverging or converging flows, e.g. branch lines or junctions
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- B60H1/00—Heating, cooling or ventilating [HVAC] devices
- B60H1/32—Cooling devices
- B60H1/3204—Cooling devices using compression
- B60H1/3228—Cooling devices using compression characterised by refrigerant circuit configurations
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- B60H1/00—Heating, cooling or ventilating [HVAC] devices
- B60H1/00642—Control systems or circuits; Control members or indication devices for heating, cooling or ventilating devices
- B60H1/00814—Control systems or circuits characterised by their output, for controlling particular components of the heating, cooling or ventilating installation
- B60H1/00878—Control systems or circuits characterised by their output, for controlling particular components of the heating, cooling or ventilating installation the components being temperature regulating devices
- B60H1/00899—Controlling the flow of liquid in a heat pump system
- B60H1/00921—Controlling the flow of liquid in a heat pump system where the flow direction of the refrigerant does not change and there is an extra subcondenser, e.g. in an air duct
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- B60H1/00642—Control systems or circuits; Control members or indication devices for heating, cooling or ventilating devices
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- B60H1/00878—Control systems or circuits characterised by their output, for controlling particular components of the heating, cooling or ventilating installation the components being temperature regulating devices
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- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
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- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
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- F25B41/39—Dispositions with two or more expansion means arranged in series, i.e. multi-stage expansion, on a refrigerant line leading to the same evaporator
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- F25B43/04—Arrangements for separating or purifying gases or liquids; Arrangements for vaporising the residuum of liquid refrigerant, e.g. by heat for withdrawing non-condensible gases
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- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2400/00—General features or devices for refrigeration machines, plants or systems, combined heating and refrigeration systems or heat-pump systems, i.e. not limited to a particular subgroup of F25B
- F25B2400/04—Refrigeration circuit bypassing means
- F25B2400/0401—Refrigeration circuit bypassing means for the compressor
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
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- F25B2400/04—Refrigeration circuit bypassing means
- F25B2400/0403—Refrigeration circuit bypassing means for the condenser
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
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- F25B2400/00—General features or devices for refrigeration machines, plants or systems, combined heating and refrigeration systems or heat-pump systems, i.e. not limited to a particular subgroup of F25B
- F25B2400/04—Refrigeration circuit bypassing means
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
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Definitions
- the present disclosure relates to a gas injection type heat management system for a vehicle, and more specifically, to a gas injection type heat management technology for a vehicle, which applies a heat exchanger to improve heating and cooling performance compared to a conventional cycle.
- an electric vehicle, etc. have been widely distributed as an eco-friendly vehicle due to an environmental issue of an internal combustion engine vehicle.
- the conventional internal combustion engine vehicle does not require a separate heating energy because the interior may be heated through the waste heat of the engine, but the electric vehicle has a problem in that the heating is performed through separate energy because the electric vehicle, etc. does not have an engine and a heating source, thereby reducing fuel efficiency.
- this gives inconvenience such as shortening the distance to empty (DTE) of the electric vehicle and requiring frequent charging.
- DTE distance to empty
- the gas injection type heat pump is a method of increasing a flow rate of the refrigerant circulated while heating using a heat exchanger (H/X) and a flash tank, thereby increasing the heating efficiency of the vehicle.
- H/X heat exchanger
- FIG. 1 is a circuit diagram of a gas injection type heat pump cycle to which a heat exchanger according to the related art is applied.
- a gas injection type heat pump cycle to which a heat exchanger according to the related art is applied may have a cycle in which the refrigerant discharged from a compressor is branched to exchange heat between the refrigerant having passed an expansion valve and the refrigerant before passing through the expansion valve in a heat exchanger and then the heat-exchanged refrigerant flows into the compressor, thereby additionally securing the flow rate of the refrigerant while heating to increase the amount of heating capacity.
- this heat pump cycle according to the related art may be used only while heating, and the components related to the gas injection including the heat exchanger may not be used while cooling.
- the present disclosure has been proposed to solve the above problem, and an object of the present disclosure is to provide a technology about a gas injection type heat management system for a vehicle, which uses a gas injection type heat pump cycle even while cooling, thereby improving the heating and cooling performance compared to the conventional cycle.
- a gas injection type heat management system for a vehicle includes a base flow path sequentially provided with a compressor, an inner condenser, a heat exchanger, a first expansion valve, an outer condenser, a second expansion valve, and an evaporator to flow refrigerant, a heat exchange flow path branched from the base flow path at an upstream point of the heat exchanger, disposed to be heat-exchangeable with the base flow path in the heat exchanger by passing through a third expansion valve, and joined to the base flow path on the compressor or at an upstream point of the compressor, a first bypass flow path connected to the base flow path to bypass the inner condenser between upstream and downstream points of the inner condenser, a second bypass flow path connected to the base flow path to bypass the heat exchanger between the upstream point and a downstream point of the heat exchanger, and a recirculation flow path branched from the base flow path at a downstream point of the outer condenser and joined
- the gas injection type heat management system may further include a gas-liquid separator provided between the evaporator and the compressor of the base flow path to separate the refrigerant into a gaseous state and a liquid state, and the heat exchange flow path may be branched to the gas-liquid separator and the compressor and joined to the base flow path.
- the compressor may be a 2-stage compressive compressor in which the gaseous state refrigerant is additionally injected into a compression intermediate region to mix the refrigerant, and the heat exchange flow path may be connected to the compressor so that the refrigerant is additionally injected to the compression intermediate region.
- the gas injection type heat management system may further include a first flow path valve provided at a point branched to the compressor and the upstream point of the compressor of the heat exchange flow path to adjust the presence or absence of the flow or the flow rate of the refrigerant each flowing into the compressor and the upstream point of the compressor, a second flow path valve provided at a point branched from the base flow path to the first bypass flow path or a point where the first bypass flow path is joined to the base flow path to adjust the presence or absence of the flow or the flow rate of the refrigerant flowing into the first bypass flow path, a third flow path valve provided at a point branched from the base flow path to the second bypass flow path or a point where the second bypass flow path is joined to the base flow path to adjust the presence or absence of the flow or the flow rate of the refrigerant each flowing into the second bypass flow path, and a fourth flow path valve provided at a point where the recirculation flow path is joined to the heat exchange flow path to adjust the presence or absence of the flow or the flow rate
- the gas injection type heat management system may further include a controller configured to control the operation of the compressor, control whether the refrigerant flows or expands by adjusting an opening amount of the first expansion valve, the second expansion valve, or the third expansion valve, and adjust the presence or absence of the flow or the flow rate of the refrigerant in the base flow path, the heat exchange flow path, the first bypass flow path, the second bypass flow path, or the recirculation flow path by adjusting an opening amount of the first flow path valve, the second flow path valve, the third flow path valve, or the fourth flow path valve.
- a controller configured to control the operation of the compressor, control whether the refrigerant flows or expands by adjusting an opening amount of the first expansion valve, the second expansion valve, or the third expansion valve, and adjust the presence or absence of the flow or the flow rate of the refrigerant in the base flow path, the heat exchange flow path, the first bypass flow path, the second bypass flow path, or the recirculation flow path by adjusting an opening amount of the first flow path valve, the second flow
- the controller may dissipate heat in an inner condenser by adjusting the opening amount of the first flow path valve, the second flow path valve, the third flow path valve, or the fourth flow path valve to block the refrigerant of the base flow path from flowing into the second bypass flow path and flowing into the recirculation flow path, the first bypass flow path, or the heat exchange flow path while the refrigerant is circulated in the base flow path.
- the controller may increase the flow rate of the refrigerant flowing into the inner condenser by adjusting the opening amount of the first flow path valve, the second flow path valve, the third flow path valve, or the fourth flow path valve so that the refrigerant of the base flow path flows into the compressor through the heat exchange flow path while the refrigerant is circulated in the base flow path.
- the controller may absorb heat in the evaporator while dissipating the heat in the outer condenser by adjusting the opening amount of the first flow path valve, the second flow path valve, the third flow path valve, or the fourth flow path valve so that the refrigerant of the base flow path flows into the first bypass flow path while the refrigerant is circulated in the base flow path.
- the controller may reduce the temperature of the refrigerant flowing into the compressor by adjusting the opening amount of the first flow path valve, the second flow path valve, the third flow path valve, or the fourth flow path valve so that the refrigerant of the base flow path flows into the first bypass flow path and the second bypass flow path and flows into an upstream point of the compressor through the recirculation flow path and the heat exchange flow path while the refrigerant is circulated in the base flow path.
- the controller may reduce a compression ratio of the compressor by adjusting the opening amount of the first flow path valve, the second flow path valve, the third flow path valve, or the fourth flow path valve so that the refrigerant of the base flow path flows into the first bypass flow path and the second bypass flow path and flows into the compressor through the recirculation flow path and the heat exchange flow path while the refrigerant is circulated in the base flow path.
- the controller may super-cool the refrigerant by adjusting the opening amount of the first flow path valve, the second flow path valve, the third flow path valve, or the fourth flow path valve so that the refrigerant of the base flow path flows into the first bypass flow path and flows into the compressor through the recirculation flow path and the heat exchange flow path while the refrigerant is circulated in the base flow path.
- the controller may super-cool the refrigerant by adjusting the opening amount of the first flow path valve, the second flow path valve, the third flow path valve, or the fourth flow path valve so that the refrigerant of the base flow path flows into the first bypass flow path and flows into an upstream point of the compressor through the recirculation flow path and the heat exchange flow path while the refrigerant is circulated in the base flow path.
- the gas injection type heat management system for the vehicle it is possible to apply the gas injection while the vehicle interior is heated, thereby improving the interior heating performance.
- FIG. 1 is a circuit diagram of a gas injection type heat pump cycle to which a heat exchanger according to the related art is applied.
- FIG. 2 is a circuit diagram of a gas injection type heat management system for a vehicle according to an exemplary embodiment of the present disclosure.
- FIGS. 3 and 4 show a circuit diagram and a P-h line diagram according to a general heating mode of the gas injection type heat management system for the vehicle according to the exemplary embodiment of the present disclosure.
- FIGS. 5 and 6 show a circuit diagram and a P-h line diagram according to a gas injection heating mode of the gas injection type heat management system for the vehicle according to the exemplary embodiment of the present disclosure.
- FIGS. 7 and 8 show a circuit diagram and a P-h line diagram according to a general cooling mode of the gas injection type heat management system for the vehicle according to the exemplary embodiment of the present disclosure.
- FIGS. 9 and 10 show a circuit diagram and a P-h line diagram according to a first liquid injection cooling mode of the gas injection type heat management system for the vehicle according to the exemplary embodiment of the present disclosure.
- FIGS. 11 and 12 show a circuit diagram and a P-h line diagram according to a second liquid injection cooling mode of the gas injection type heat management system for the vehicle according to the exemplary embodiment of the present disclosure.
- FIGS. 13 and 14 show a circuit diagram and a P-h line diagram according to a first sub-cooling cooling mode of the gas injection type heat management system for the vehicle according to the exemplary embodiment of the present disclosure.
- FIGS. 15 and 16 show a circuit diagram and a P-h line diagram according to a second sub-cooling cooling mode of the gas injection type heat management system for the vehicle according to the exemplary embodiment of the present disclosure.
- first and/or second may be used to describe various components, but the components should not be limited to the terms. The terms are used only for the purpose of distinguishing one component from other components, and for example, a first component may be referred to as a second component, and similarly, the second component may also be referred to as the first component, without departing from the scope according to the concept of the present disclosure.
- a refrigeration cycle to which the conventional ejector is applied has a structure of flowing the refrigerant condensed by a condenser to a gas-liquid separator by a compression recovery function using the venturi effect of the ejector and circulating the liquid refrigerant through an expansion valve and an evaporator. Therefore, it is possible to reduce the consumed power (work) of the compressor and increase the flow rate of the refrigerant compared to a general refrigeration cycle.
- the refrigeration cycle to which the conventional ejector is applied has a problem in that it is difficult to secure the flow rate of an additional refrigerant in a low-temperature state.
- the refrigeration cycle to which the injection is applied is classified into a gas injection and a liquid injection.
- the refrigeration cycle to which the gas injection is applied flows the refrigerant to an evaporator through a 2-stage expansion process and injects a gaseous refrigerant of an intermediate pressure primarily expanded into a compressor. Therefore, it is possible to increase the flow rate of the refrigerant flowing into an outer condenser, or an inner condenser and the compressor, and to improve the compression effect by the 2-stage compression to reduce the consumed power of the compressor. In particular, it is possible to solve a reduction in performance of the refrigeration cycle in cold and tropical areas.
- the refrigeration cycle to which the liquid injection is applied may prevent overheating of the compressor and at the same time, additionally increase the flow rate of the refrigerant by absorbing the heat consumption of the compressor.
- the heat exchanger type separates a part of the refrigerant on a rear end of the outer condenser or the inner condenser and exchanges heat with the refrigerant of the intermediate pressure primarily expanded. Therefore, it is possible to reduce the dryness of the refrigerant flowing into the evaporator by secondarily expanding the refrigerant while vaporizing the separated refrigerant.
- the flash tank type expands the entire refrigerant on the rear end of the outer condenser or the inner condenser, and then separates the gaseous refrigerant and the liquid refrigerant to flow the gaseous and liquid refrigerant into the compressor and a secondary expansion valve, respectively. Therefore, it is possible to reduce the dryness of the refrigerant flowing into the evaporator by separating the liquid refrigerant to secondarily expand the liquid refrigerant.
- FIG. 2 is a circuit diagram of a gas injection type heat management system for a vehicle according to an exemplary embodiment of the present disclosure.
- a gas injection type heat management system 110 for a vehicle includes a base flow path 100 sequentially provided with a compressor 110 , an inner condenser 120 , a heat exchanger 130 , a first expansion valve EXV 1 , an outer condenser 140 , a second expansion valve EXV 2 , and an evaporator 150 to flow refrigerant.
- a heat exchange flow path 200 is branched from the base flow path 100 at an upstream point of the heat exchanger 130 , disposed to be heat-exchangeable with the base flow path 100 in the heat exchanger 130 by passing through a third expansion valve EXV 3 , and joined to the base flow path 100 on the compressor 110 or at an upstream point of the compressor 110 , and a first bypass flow path 300 connected to the base flow path 100 to bypass the inner condenser 120 between upstream and downstream points of the inner condenser 120 .
- the system further includes a second bypass flow path 400 connected to the base flow path 100 to bypass the heat exchanger 130 between the upstream point and a downstream point of the heat exchanger 130 , and a recirculation flow path 500 branched from the base flow path 100 on a downstream point of the outer condenser 140 and joined to the heat exchange flow path 200 on an upstream point of the third expansion valve EXV 3 .
- the gas injection type heat management system for the vehicle is a refrigeration cycle using the heat exchanger 130 type gas injection, and more specifically, uses the gas injection while an interior is heated and uses a liquid injection while the interior is cooled, thereby improving the heating and cooling performance and increasing the use of the heat management system.
- the base flow path 100 may be a refrigerant circuit of the general refrigeration cycle.
- the refrigerant compressed by the compressor 110 in the high-temperature/high-pressure flows to the inner condenser 120 to heat the interior, and the refrigerant having passed through the inner condenser 120 sequentially flows to the first expansion valve EXV 1 and the outer condenser 140 through the heat exchanger 130 to absorb heat.
- the refrigerant secondarily expanded while passing through the second expansion valve EXV 2 may absorb heat in the evaporator 150 and therefore, be circulated back to the compressor 110 in a state of being evaporated to a gaseous state.
- the outer condenser 140 may be exposed to the outside of the vehicle, and the inner condenser 120 and the evaporator 150 may be positioned inside an air-conditioning line of the vehicle.
- the heat exchange flow path 200 may be branched from the base flow path 100 at the upstream point of the heat exchanger 130 to extend to be joined to the base flow path 100 on the compressor 110 or at an upstream point of the compressor 110 , and the third expansion valve EXV 3 and the heat exchanger 130 may be provided therebetween.
- the heat exchanger 130 may be a device in which the base flow path 100 and the heat exchange flow path 200 are disposed to be heat-exchangeable with each other, and may be a device for activating the heat exchange with each other while the refrigerant therein flows to each flow path not to be mixed with each other.
- the first bypass flow path 300 is connected to the base flow path 100 to bypass the inner condenser 120 between the upstream and downstream points of the inner condenser 120 , and is a flow path for bypassing the inner condenser 120 in case of not a vehicle interior heating mode.
- the first bypass flow path 300 may be connected to the base flow path 100 to be branched or joined through a 3-Way valve.
- the second bypass flow path 400 is connected to the base flow path 100 to bypass the heat exchanger 130 between the upstream point of the heat exchanger 130 and the downstream point of the heat exchanger 130 and may bypass the heat exchanger 130 to heat-dissipate the high-temperature/high-pressure refrigerant discharged from the compressor 110 in the outer condenser 140 while the vehicle interior is cooled.
- the second bypass flow path 400 may be branched at a downstream point of a point branched from the base flow path 100 to the heat exchange flow path 200 and joined at an upstream point of the first expansion valve EXV 1 .
- the recirculation flow path 500 may be branched from the base flow path 100 at a downstream point of the outer condenser 140 and joined to the heat exchange flow path 200 .
- the recirculation flow path 500 may be joined at the upstream point of the third expansion valve EXV 3 through the 3-Way valve to selectively flow the refrigerant flowing from the upstream point of the heat exchanger 130 of the base flow path 100 and the refrigerant flowing from the downstream point of the outer condenser 140 of the base flow path 100 through the recirculation flow path 500 to the third expansion valve EXV 3 and the heat exchanger 130 .
- the gas injection type heat management system for the vehicle it is possible to apply the gas injection to the heating of the vehicle interior and apply the liquid injection while the interior is cooled using the configuration of the heat exchanger 130 , etc.
- the gas injection type heat management system for the vehicle may further include a gas-liquid separator 160 provided between the evaporator 150 and the compressor 110 of the base flow path 100 to separate the refrigerant into the gaseous state and the liquid state, and the heat exchange flow path 200 may be branched to the gas-liquid separator 160 and the compressor 110 and joined to the base flow path 100 .
- the gas-liquid separator 160 may separate the refrigerant discharged after absorbing heat in the evaporator 150 into the gaseous state and the liquid state and supply only the gaseous state refrigerant to the compressor 110 .
- the heat exchange flow path 200 may be branched into two branches while passing through the heat exchanger 130 , one of which may be connected to the gas-liquid separator 160 positioned at the upstream point of the compressor 110 , and the other of which may be connected to the compressor 110 and joined to the base flow path 100 .
- the compressor 110 is a two-stage compressive compressor 110 in which the gaseous state refrigerant is additionally injected into a compression intermediate region to mix the refrigerant, and the heat exchange flow path 200 may be connected to the compressor 110 so that the refrigerant is additionally injected into the compression intermediate region.
- the compressor 110 is the two-stage compressive compressor 110 formed with an injection port into which the gaseous state refrigerant of the intermediate pressure is injected into the compression intermediate region separately from an inlet port into which the refrigerant is introduced to mix the refrigerant.
- the refrigerants in the base flow path 100 and the heat exchange flow path 200 may be mixed to flow into the inlet port of the compressor 110 , and when the refrigerant flows into the compressor 110 through the heat exchange flow path 200 , the refrigerant may be additionally injected into the compression intermediate region through the injection port.
- the gas injection type heat management system for the vehicle may further include a first flow path valve 210 provided at a point branched to the compressor 110 and the upstream point of the compressor 110 of the heat exchange flow path 200 to adjust the presence or absence of the flow or the flow rate of the refrigerant each flowing into the compressor 110 and the upstream point of the compressor 110 , a second flow path valve 310 provided at a point branched from the base flow path 100 to the first bypass flow path 300 or a point where the first bypass flow path 300 is joined to the base flow path 100 to adjust the presence or absence of the flow or the flow rate of the refrigerant flowing into the first bypass flow path 300 , a third flow path valve 410 provided at a point branched from the base flow path 100 to the second bypass flow path 400 or a point where the second bypass flow path 400 is joined to the base flow path 100 to adjust the presence or absence of the flow or the flow rate of the refrigerant flowing into the second bypass flow path 400 , and a fourth flow path valve 510 provided at
- the first flow path valve 210 , the second flow path valve 310 , the third flow path valve 410 , and the fourth flow path valve 510 may be the 3-Way valves.
- the first flow path valve 210 may adjust the presence or absence of the flow or the flow rate of the refrigerant branched to the upstream point of the compressor 110 and the compressor 110 from the refrigerant flowing into the heat exchange flow path 200
- the second flow path valve 310 and the third flow path valve 410 may adjust the presence or absence of the flow or the flow rate of the refrigerant each branched to the first bypass flow path 300 and the second bypass flow path 400 from the base flow path 100 .
- the fourth flow path valve 510 may adjust the presence or absence of the flow or the flow rate of the refrigerant flowing through the heat exchange flow path 200 from the base flow path 100 and the refrigerant flowing into the heat exchange flow path 200 from the recirculation flow path 500 .
- the gas injection type heat management system for the vehicle may further include a controller 600 configured to control the operation of the compressor 110 , control whether the refrigerant flows or expands by adjusting an opening amount of the first expansion valve EXV 1 , the second expansion valve EXV 2 , or the third expansion valve EXV 3 , and adjust the presence or absence of the flow or the flow rate of the refrigerant in the base flow path 100 , the heat exchange flow path 200 , the first bypass flow path 300 , the second bypass flow path 400 , or the recirculation flow path 500 by adjusting an opening amount of the first flow path valve 210 , the second flow path valve 310 , the third flow path valve 410 , or the fourth flow path valve 510 .
- a controller 600 configured to control the operation of the compressor 110 , control whether the refrigerant flows or expands by adjusting an opening amount of the first expansion valve EXV 1 , the second expansion valve EXV 2 , or the third expansion valve EXV 3 , and adjust the presence or absence of
- the controller 600 may be implemented through a non-volatile memory (not shown) configured to store data about an algorithm configured to control the operations of various components for the vehicle or software commands for playing the algorithm and a processor (not shown) configured to perform the operation described below using the data stored in the corresponding memory.
- a non-volatile memory (not shown) configured to store data about an algorithm configured to control the operations of various components for the vehicle or software commands for playing the algorithm
- a processor (not shown) configured to perform the operation described below using the data stored in the corresponding memory.
- the memory and the processor may be implemented as separate chips.
- the memory and the processor may be implemented as a single chip integrated with each other.
- the processor may take the form of one or more processors.
- the controller 600 may control so that the first expansion valve EXV 1 , the second expansion valve EXV 2 , and the third expansion valve EXV 3 flow, expand, or block the refrigerant by adjusting the opening amounts of the first expansion valve EXV 1 , the second expansion valve EXV 2 , and the third expansion valve EXV 3 .
- the controller 600 may control so that the first flow path valve 210 , the second flow path valve 310 , the third flow path valve 410 , and the fourth flow path valve 510 flow the refrigerant, or adjust or block the flow rate thereof from the base flow path 100 into the heat exchange flow path 200 , the first bypass flow path 300 , the second bypass flow path 400 , and the recirculation flow path 500 by adjusting the opening amounts of the first flow path valve 210 , the second flow path valve 310 , the third flow path valve 410 , and the fourth flow path valve 510 .
- FIGS. 3 and 4 show a circuit diagram and a P-h line diagram according to a general heating mode of the gas injection type heat management system for the vehicle according to the exemplary embodiment of the present disclosure.
- the controller 600 may dissipate the heat in the inner condenser 120 by adjusting the opening amount of the first flow path valve 210 , the second flow path valve 310 , the third flow path valve 410 , or the fourth flow path valve 510 to block the refrigerant of the base flow path 100 from flowing into the second bypass flow path 400 and flowing into the recirculation flow path 500 , the first bypass flow path 300 , or the heat exchange flow path 200 while the refrigerant is circulated in the base flow path 100 .
- the heating capacity may be supplied to the interior through the inner condenser 120 with the high-temperature/high-pressure refrigerant discharged from the compressor 110 , and the refrigerant condensed by the inner condenser 120 may absorb heat from the outside air in the outer condenser 140 through the first expansion valve EXV 1 .
- the gaseous state refrigerant having passed through the outer condenser 140 may flow into the compressor 110 through the third expansion valve EXV 3 and the evaporator 150 .
- FIGS. 5 and 6 show a circuit diagram and a P-h line diagram according to a gas injection heating mode of the gas injection type heat management system for the vehicle according to the exemplary embodiment of the present disclosure.
- the controller 600 may increase the flow rate of the refrigerant flowing into the inner condenser 120 by adjusting the opening amount of the first flow path valve 210 , the second flow path valve 310 , the third flow path valve 410 , or the fourth flow path valve 510 so that the refrigerant of the base flow path 100 flows into the compressor 110 through the heat exchange flow path 200 while the refrigerant is circulated in the base flow path.
- the controller 600 may increase the flow rate of the refrigerant flowing into the inner condenser 120 using the heat exchanger 130 .
- the heating capacity may be supplied to the interior through the inner condenser 120 with the high-temperature/high-pressure refrigerant discharged from the compressor 110 , and a part of the refrigerant condensed by the inner condenser 120 may directly flow into the heat exchanger 130 through the base flow path 100 , and the remainder may be branched to the heat exchange flow path 120 to flow into the heat exchanger 130 in a state of being expanded through the third expansion valve EXV 3 .
- the refrigerant flowing into the heat exchanger 130 through the base flow path 100 may flow into the first expansion valve EXV 1 and the outer condenser 140 in the cooled state so that super-cooling is secured by the heat exchange to absorb heat from the outside air.
- the refrigerant flowing into the heat exchanger 130 through the heat exchange flow path 200 may be heated by the heat exchange to flow into the compression intermediate region of the compressor 110 .
- FIGS. 7 and 8 show a circuit diagram and a P-h line diagram according to a general cooling mode of the gas injection type heat management system for the vehicle according to the exemplary embodiment of the present disclosure.
- the controller 600 may absorb heat in the evaporator 150 while dissipating heat in the outer condenser 140 by adjusting the opening amount of the first flow path valve 210 , the second flow path valve 310 , the third flow path valve 410 , or the fourth flow path valve 510 so that the refrigerant of the base flow path 100 flows into the first bypass flow path 300 while the refrigerant is circulated in the base flow path 100 .
- the high-temperature/high-pressure refrigerant discharged from the compressor 110 may flow into the first bypass flow path 300 to bypass the inner condenser 120 and flow into the second bypass flow path 400 to bypass the heat exchanger 130 , and then be condensed by the outer condenser 140 to dissipate heat to the outside air.
- the refrigerant having passed through the outer condenser 140 may flow into the evaporator 150 in a state of being expanded by the third expansion valve EXV 3 to absorb heat from the air of the vehicle interior, and then flow into the entrance of the compressor 110 .
- FIGS. 9 and 10 show a circuit diagram and a P-h line diagram according to a first liquid injection cooling mode of the gas injection type heat management system for the vehicle according to the exemplary embodiment of the present disclosure.
- the controller 600 may reduce the temperature of the refrigerant flowing into the compressor 110 by adjusting the opening amount of the first flow path valve 210 , the second flow path valve 310 , the third flow path valve 410 , or the fourth flow path valve 510 so that the refrigerant of the base flow path 100 flows into the first bypass flow path 300 and the second bypass flow path 400 and flows into the upstream point of the compressor 110 through the recirculation flow path 500 and the heat exchange flow path 200 while the refrigerant is circulated in the base flow path 100 .
- the high-temperature/high-pressure refrigerant discharged from the compressor 110 may flow into the first bypass flow path 300 to bypass the inner condenser 120 and flow into the second bypass flow path 400 to bypass the heat exchanger 130 , and then dissipate heat to the outside air while passing through the first expansion valve EXV 1 and the outer condenser 140 .
- a part of the refrigerant having passed through the outer condenser 140 may flow into the third expansion valve EXV 3 and the heat exchanger 130 through the heat exchange flow path 200 while flowing into the recirculation flow path 500 , and the remainder may flow into the second expansion valve EXV 2 and the evaporator 150 through the base flow path 100 to absorb heat from the air of the vehicle interior, and then flow into the entrance of the compressor 110 .
- controller 600 may control the fourth flow path valve 510 so that the refrigerant of the base flow path 100 having passed through the outer condenser 140 flows into the recirculation flow path 500 and the heat exchange flow path 200 , so that a part of the refrigerant having passed through the outer condenser 140 may flow into the third expansion valve EXV 3 through the recirculation flow path 500 to be expanded.
- the refrigerant expanded by the third expansion valve EXV 3 may flow into the gas-liquid separator 160 through the heat exchanger 130 .
- the gaseous state refrigerant having passed through the third expansion valve EXV 3 and the heat exchanger 130 may be supplied to the gas-liquid separator in the low-temperature state and may flow into the entrance of the compressor 110 in a state of being mixed with the refrigerant of the base flow path 100 , thereby reducing the temperature of the refrigerant flowing into the compressor 110 .
- the gaseous state refrigerant is supplied in the low-temperature state when the outside air is in a hot-season condition, thereby reducing the temperature of the refrigerant flowing into the compressor 110 to reduce a compression ratio, so that the load of the entire system may be reduced.
- FIGS. 11 and 12 show a circuit diagram and a P-h line diagram according to a second liquid injection cooling mode of the gas injection type heat management system for the vehicle according to the exemplary embodiment of the present disclosure.
- the controller 600 may reduce the compression ratio of the compressor 110 by adjusting the opening amount of the first flow path valve 210 , the second flow path valve 310 , the third flow path valve 410 , or the fourth flow path valve 510 so that the refrigerant of the base flow path 100 flows into the first bypass flow path 300 and the second bypass flow path 400 and flows into the compressor 110 through the recirculation flow path 500 and the heat exchange flow path 200 while the refrigerant is circulated in the base flow path 100 .
- the high-temperature/high-pressure refrigerant discharged from the compressor 110 may flow into the first bypass flow path 300 to bypass the inner condenser 120 and flow into the second bypass flow path 400 to bypass the heat exchanger 130 , and then dissipate heat to the outside air through the first expansion valve EXV 1 and the outer condenser 140 .
- the refrigerant having passed through the outer condenser 140 may flow into the evaporator 150 in a state of being expanded by the second expansion valve EXV 2 to absorb heat from the air of the vehicle interior, and then flow into the entrance of the compressor 110 .
- the controller 600 may control the fourth flow path valve 510 so that the refrigerant of the base flow path 100 having passed through the outer condenser 140 flows into the recirculation flow path 500 and the heat exchange flow path 200 , so that a part of the refrigerant having passed through the outer condenser 140 may flow into the third expansion valve EXV 3 through the recirculation flow path 500 to be expanded.
- the refrigerant expanded by the third expansion valve EXV 3 may directly flow into the compressor 130 through the heat exchanger 130 through the heat exchange flow path 200 . Therefore, the gaseous state refrigerant having passed through the third expansion valve EXV 3 and the heat exchanger 130 may directly flow into the compression intermediate region of the compressor 110 in the low-temperature state, thereby reducing the compression ratio of the compressor 110 .
- the gaseous state refrigerant may be directly supplied to the compressor 110 in the low-temperature state when the outside air is in a hot-season condition to reduce the compression ratio of the compressor 110 , thereby reducing the load of the entire system.
- FIGS. 13 and 14 show a circuit diagram and a P-h line diagram according to a first sub-cooling cooling mode of the gas injection type heat management system for the vehicle according to the exemplary embodiment of the present disclosure.
- the controller 600 may super-cool the refrigerant by adjusting the opening amount of the first flow path valve 210 , the second flow path valve 310 , the third flow path valve 410 , or the fourth flow path valve 510 so that the refrigerant of the base flow path 100 flows into the first bypass flow path 300 and flows into the compressor 110 through the recirculation flow path 500 and the heat exchange flow path 200 while the refrigerant is circulated in the base flow path 100 .
- the high-temperature/high-pressure refrigerant discharged from the compressor 110 may flow into the first bypass flow path 300 to bypass the inner condenser 120 and be condensed while exchanging heat with the heat exchange flow path 200 in the heat exchanger 130 through the base flow path 100 , and then dissipate heat to the outside air while being secondarily condensed through the first expansion valve EXV 1 and the outer condenser 140 .
- a part of the refrigerant of the base flow path 100 having passed through the outer condenser 140 may be branched to the recirculation flow path 500 to flow into the heat exchange flow path 200 .
- a small amount of refrigerant flowing into the heat exchange flow path 200 may become the gaseous state of the low-temperature state while passing through the third expansion valve EXV 3 and directly flow into the compressor 110 after cooling the refrigerant of the base flow path 100 while passing through the heat exchanger 130 .
- FIGS. 15 and 16 show a circuit diagram and a P-h line diagram according to a second sub-cooling cooling mode of the gas injection type heat management system for the vehicle according to the exemplary embodiment of the present disclosure.
- the controller 600 may super-cool the refrigerant by adjusting the opening amount of the first flow path valve 210 , the second flow path valve 310 , the third flow path valve 410 , or the fourth flow path valve 510 so that the refrigerant of the base flow path 100 flows into the first bypass flow path 300 and flows into the upstream point of the compressor 110 through the recirculation flow path 500 and the heat exchange flow path 200 while the refrigerant is circulated in the base flow path 100 .
- the high-temperature/high-pressure refrigerant discharged from the compressor 110 may flow into the first bypass flow path 300 to bypass the inner condenser 120 and be condensed while exchanging heat with the heat exchange flow path 200 in the heat exchanger 130 through the base flow path 100 , and then dissipate heat to the outside air while being secondarily condensed through the first expansion valve EXV 1 and the outer condenser 140 .
- a part of the refrigerant of the base flow path 100 having passed through the outer condenser 140 may be branched to the recirculation flow path 500 to flow into the heat exchange flow path 200 .
- a small amount of refrigerant flowing into the heat exchange flow path 200 may become the gaseous state of the low-temperature state while passing through the third expansion valve EXV 3 and flow into the gas-liquid separator 160 positioned at the upstream point of the compressor after cooling the refrigerant of the base flow path 100 while passing through the heat exchanger 130 .
Abstract
Description
Claims (12)
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KR10-2021-0188576 | 2021-12-27 | ||
KR1020210188576A KR20230099313A (en) | 2021-12-27 | 2021-12-27 | Thermal management system for vehicle of gas injection type |
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US20230204268A1 US20230204268A1 (en) | 2023-06-29 |
US11828505B2 true US11828505B2 (en) | 2023-11-28 |
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KR (1) | KR20230099313A (en) |
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- 2021-12-27 KR KR1020210188576A patent/KR20230099313A/en unknown
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- 2022-09-16 US US17/946,291 patent/US11828505B2/en active Active
- 2022-10-12 DE DE102022126527.7A patent/DE102022126527A1/en active Pending
- 2022-10-13 CN CN202211254512.1A patent/CN116353295A/en active Pending
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Also Published As
Publication number | Publication date |
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CN116353295A (en) | 2023-06-30 |
KR20230099313A (en) | 2023-07-04 |
DE102022126527A1 (en) | 2023-06-29 |
US20230204268A1 (en) | 2023-06-29 |
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